Keeping blog contribution guidelines DRY.
Merge pull request #882 from rackerlabs/dev

Pushing to production after reviewing on staging
Merge pull request #884 from rackerlabs/dev

Pushing to production after reviewing on staging
Merge pull request #887 from rackerlabs/dev

Pushing to production after reviewing on staging
Merge pull request #889 from rackerlabs/dev

Merging to production, staging looks good.
Bumping up submodule commit hash.
Merge pull request #891 from ycombinator/dev

Adding alias from /blog/atom.xml -> /atom.xml.
Merge pull request #892 from ycombinator/nginx-version

Bumping up submodule commit hash.
Merge pull request #893 from rackerlabs/dev

Pushing to production after reviewing on staging
Defining  for PHP code sample
Shifting to authenticate.rst include file instead
Merge pull request #894 from jamiehannaford/servers-php-fix

Defining $service for PHP code sample
Merge pull request #896 from rackerlabs/dev

Merging getting started fix to the php code samples for compute.
Report from Ruby DCamp 2014
Changes/edits for grammar, improvements, etc.
Edits for improvement.
Merge pull request #897 from DonSchenck/rubydcamp14

Report from Ruby DCamp 2014
Added author's bio to Don's post
Merge pull request #898 from rdodev/add-don-bio

Added author's bio to Don's post
Markdown fix, excerpt fix and other formatting issues.